Vulnerability · Published Sep 2, 2026 · Assigned by VulnCheck
CVE-2026-84804Kimai before 2.65.0 Authorization Bypass via Team Activity API
Medium 5.4
In plain English
A medium-severity improper access control in kimai from kimai. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Severity (CVSS 3.1)5.4Medium
Exploit odds (30 days)0.3%top 74.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Kimai before 2.65.0 fails to properly validate permissions when removing team access to activities, projects, and customers via API endpoints. Authenticated users with edit_team permission can revoke team access without the required permissions_activity check, bypassing authorization controls.
Affected products (as reported)
Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
References
- GitHub Security Advisory (GHSA-mc86-77vp-82g3) vendor-advisory
- VulnCheck Advisory: Kimai before 2.65.0 Authorization Bypass via Team Activity API third-party-advisory